CN116801138A

CN116801138A - Control method, device, communication equipment and computer storage medium

Info

Publication number: CN116801138A
Application number: CN202211019531.6A
Authority: CN
Inventors: 李俊玮; 张德朝
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2022-04-29
Filing date: 2022-08-24
Publication date: 2023-09-22
Also published as: WO2023208116A1

Abstract

The embodiment of the application discloses a control method, a control device, communication equipment and a computer storage medium, wherein the method comprises the following steps: the first device establishes a second channel for a third device over a first link between the first device and the second device; wherein each first device is connected to one or more second devices via a first link, and each second device is connected to one or more third devices via a second link.

Description

Control method, device, communication equipment and computer storage medium

Cross Reference to Related Applications

The present application is based on and claims priority from chinese patent application No. 202210475670.3, application No. 2022, month 04, 29, and chinese patent application No. 202210928949.2, application No. 2022, month 08, 03, which are incorporated herein by reference in their entirety.

Technical Field

The present application relates to the field of communications technologies, and in particular, to a management and control method, an apparatus, a communications device, and a computer storage medium.

Background

The optical fiber to the room (FTTR, fiber to The Room) is a novel coverage mode of home and SOHO office networks in the gigabit era, and is a novel networking scheme for realizing full coverage of Wi-Fi6 gigabit in a whole house by further deriving the optical fiber layout to each room or office on the basis of the optical Fiber To The Building (FTTB) and the optical Fiber To The Home (FTTH) so that each room or office can reach the gigabit optical fiber network speed.

The capability of uniformly controlling the point-to-multipoint cascade (2 hops and above) optical communication system is lacking at present, a collaboration mechanism can only be built on the system based on the segmented control, the control collaboration process is complex, and the challenge exists in building the end-to-end slicing capability.

Disclosure of Invention

In order to solve the existing technical problems, the embodiment of the invention provides a management and control method, a management and control device, communication equipment and a computer storage medium.

In order to achieve the above object, the technical solution of the embodiment of the present invention is as follows:

in a first aspect, an embodiment of the present invention provides a control method, where the method is applied to a first device, and the method includes:

the first device establishes a second channel for a third device on a first link between the first device and the second device;

wherein each second device is connected to one or more third devices via a second link.

In the above scheme, the method further comprises: the first device obtains capability information of the second device based on the first link, wherein the capability information at least comprises interface capability information of the second device facing a third device.

In the above scheme, the capability information includes at least one of the following information:

The number of physical ports, the physical port protocol, the physical port rate specification, the number of connectable third devices, the type of connectable third devices.

In the above solution, the first device establishes a second channel for a third device on a first link between the first device and the second device, including: the first device establishes a second channel for a third device over a first link with the second device based at least on the capability information.

In the above solution, the first device establishes a second channel for a third device on a first link with the second device based at least on the capability information, including:

the first device establishes a second channel for a third device on a first link with the second device based at least on the number of physical ports and/or the number of connectable third devices.

In the above solution, the first device establishes a second channel for a third device on a first link between the first device and the second device, including: the first equipment receives first information sent by second equipment, and a second channel is established for third equipment on a first link between the first equipment and the second equipment;

the first information is used for notifying that a second channel is established for the third device and/or notifying that a new third device accesses the second device.

In the above solution, the first device establishes a second channel for a third device on a first link between the first device and the second device, including:

the first device obtains second information, wherein the second information is used for representing information of a third device accessed by the second device;

the first device establishes a second channel for a third device over a first link with the second device.

In the above scheme, the number of the second channels is one or more;

in the case that the number of the second channels is one, the second channels are used for transmitting the management messages of the one or more third devices;

in case the number of second channels is a plurality, each second channel is for transmitting a management message of a corresponding or corresponding group of third devices.

In the above scheme, the method further comprises: the first device establishes a first channel for the second device on the first link, the first channel being used for transmitting a management and control message of the second device.

In the above scheme, the method further comprises: the first device transmitting a management and control message regarding the third device over the second channel and a third channel;

Wherein the third channel is a channel on the second link.

and when the first device is on line with the second device, a GEM port/connection or an XGEM port/connection is created, and a second channel is established based on the GEM port/connection or the XGEM port/connection.

the first device sends a first request to the second device, the first request being for requesting creation of a GEM port/connection or an XGEM port/connection, and a second channel being established based on the GEM port/connection or XGEM port/connection.

In the above solution, the first device transmitting, through the second channel, a management message about the third device includes: the first device sends a first management and control message through the second channel, wherein the first management and control message comprises a first message of the third device and/or addressing information of the third device.

In the above solution, the first device transmitting, through the second channel, a management message about the third device includes:

The first device encapsulates a first message sent to the third device to obtain a first control message, and sends the first control message through the second channel; the first management and control message comprises addressing information of the third device, and the addressing information at least comprises port information of the second device corresponding to the third device and/or information of the third device; and/or the number of the groups of groups,

and the first device decapsulates the second management and control message through the second management and control message received by the second channel from the third device to obtain a second message.

In the above solution, the flow bearing entity in the uplink direction of the second channel is the same as the flow bearing entity in the uplink direction of the first channel between the first device and the second device.

In a second aspect, an embodiment of the present invention further provides a control method, where the method is applied to a second device, where the second device is connected to a first device through a first link, and the second device is connected to one or more third devices through a second link; the method comprises the following steps:

the second device transmits a management and control message between the first device and the third device through a second channel established on the first link and a third channel established on the second link.

In the above scheme, the method further comprises: the second device sends capability information of the second device to the first device, wherein the capability information at least comprises interface capability information of the second device facing a third device.

In the above scheme, the method further comprises: and after the second device determines that the third device is accessed to the second device, the second device sends first information to the first device, wherein the first information is used for notifying the first device to establish a second channel for the third device and/or notifying that a new third device is accessed to the second device.

In the above scheme, the number of the second channels is one or more;

in the case that the number of the second channels is one, the second channels are used for transmitting the management messages of the one or more third devices; and/or the number of the groups of groups,

In the above scheme, the method further comprises: and the second device determines the association relation between the second channel and the third channel.

In the above solution, the transmitting, by the second device, the management and control message between the first device and the third device through the second channel established on the first link and the third channel established on the second link includes:

and the second equipment forwards the management and control information transmitted by the first equipment through the second channel to a corresponding third channel based on the association relation, or forwards the management and control information transmitted by the third equipment through the third channel to a corresponding second channel based on the association relation.

In the above scheme, the method further comprises: and the second device sends second information to the first device, wherein the second information is used for representing information of a third device which the second device has access to.

In the above scheme, the method further comprises: the second device establishes the third channel in the process of determining that a third device is accessed to the second device; or,

and the second device initiates the establishment of the third channel after determining that the establishment of the second channel is completed.

In the above scheme, the method further comprises: the second device receives a first request sent by the first device, wherein the first request is used for requesting to create a GEM port/connection or an XGEM port/connection;

the second device creates a GEM port/connection or XGEM port/connection, and establishes a second channel based on the GEM port/connection or XGEM port/connection.

the second device receives a third management and control message sent by the first device through the second channel, decapsulates the third management and control message to obtain a third message and addressing information of the third device in the third management and control message, and sends the third message to the third device through the third channel according to the addressing information; and/or the number of the groups of groups,

the second device receives a fourth message sent by the third device through the third channel, encapsulates the fourth message to obtain a fourth management and control message, and sends the fourth management and control information to the first device through the second channel; the fourth management and control message comprises addressing information of the third device, and the addressing information at least comprises information of the third device and/or port information of a second device corresponding to the third device.

In a third aspect, an embodiment of the present invention further provides a control method, where the method is applied to a third device, and one or more third devices are connected to a second device through a second link; the second device is connected with the first device through a first link; the method comprises the following steps:

and the third device transmits a management and control message carrying a first identifier through a third channel established on the second link, wherein the first identifier is used for indicating whether the management and control message is sent to the second device or the first device.

In the above scheme, the management and control message is an ONU management and control interface (OMCI, ONU Management and Control Interface) message; the method further comprises the steps of:

the third device takes a transaction association identification (Transaction correlation identifier) field in an OMCI message as the first identification; and/or the number of the groups of groups,

the third device has a device identification (Device identifier) field in an OMCI message as the first identification.

In a fourth aspect, the embodiment of the present invention further provides an access network, where the access network includes a first device, a second device, and a third device; the first device is connected with the second device through a first link, and the second device is connected with the third device through a second link;

and managing the third equipment through establishing a channel between the first equipment and the third equipment, wherein the second equipment is used for forwarding the management and control message between the first equipment and the third equipment.

In a fifth aspect, an embodiment of the present invention further provides a control apparatus, where the apparatus is applied to a first device, and the apparatus includes a first processing unit configured to establish a second channel for a third device on a first link with a second device;

In a sixth aspect, an embodiment of the present invention further provides a control apparatus, where the apparatus is applied to a second device, where the second device is connected to a first device through a first link, and the second device is connected to one or more third devices through a second link; the apparatus includes a transmission unit configured to transmit a management message between the first device and the third device through a second channel established on the first link and a third channel established on the second link.

In a seventh aspect, the embodiment of the present invention further provides a control apparatus, where the control apparatus is applied to a third device, and one or more third devices are connected to a second device through a second link; the second device is connected with the first device through a first link; the device comprises a sending unit, a first device and a second device, wherein the sending unit is used for transmitting a management and control message carrying a first identifier through a third channel established on the second link, and the first identifier is used for indicating whether the management and control message is sent to the second device or the first device.

In an eighth aspect, embodiments of the present invention further provide a computer readable storage medium having stored thereon a computer program which when executed by a processor implements the steps of the method according to the foregoing first, second or third aspects of the embodiments of the present invention.

In a ninth aspect, an embodiment of the present invention further provides a communications device, including a memory, a processor, and a computer program stored on the memory and executable on the processor, where the processor executes the program to implement the steps of the method according to the foregoing first, second or third aspect of the embodiments of the present invention.

The embodiment of the invention provides a control method, a device, communication equipment and a computer storage medium, wherein the method comprises the following steps: the first device establishes a second channel for a third device over a first link between the first device and the second device; wherein each second device is connected to one or more third devices via a second link; the second device transmits a management and control message between the first device and the third device through a second channel established on the first link and a third channel established on the second link. By adopting the technical scheme of the embodiment of the invention, the second channel is established for the third device on the first link through the first device, so that the first device can obtain the control information of the third device through the second channel, and unified control of the first device on the multi-level network (system) is realized.

Drawings

Fig. 1 is a schematic structural diagram of an access network to which a control method according to an embodiment of the present invention is applied;

FIG. 2 is a flow chart of a control method according to an embodiment of the invention;

FIG. 3 is a schematic diagram of a second channel in a control method according to an embodiment of the present invention;

FIG. 4 is a second flow chart of a control method according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a control device according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a second embodiment of a control device;

fig. 7 is a schematic diagram of a hardware composition structure of a communication device according to an embodiment of the present invention.

Detailed Description

The invention will be described in further detail with reference to the accompanying drawings and specific examples.

The technical scheme of the embodiment of the invention can be applied to various communication systems, such as: global system for mobile communications (GSM, global System of Mobile communication), long term evolution (LTE, long Term Evolution) or 5G systems, etc. Alternatively, the 5G system or 5G network may also be referred to as a New Radio (NR) system or NR network.

By way of example, the communication system to which the embodiments of the present invention are applied may include network devices and terminal devices (may also be referred to as terminals, communication terminals, etc.); the network device may be a device in communication with the terminal device. Wherein the network device may provide communication coverage for a range of areas and may communicate with terminals located within the areas. Alternatively, the network device may be a base station in each communication system, such as an evolved base station (eNB, evolutional Node B) in an LTE system, and also such as a base station (gNB) in a 5G system or an NR system.

It should be understood that a device having a communication function in a network/system according to an embodiment of the present application may be referred to as a communication device. The communication device may include a network device and a terminal having a communication function, where the network device and the terminal device may be the specific devices described above, and are not described herein; the communication device may also include other devices in the communication system, such as a network controller, a mobility management entity, and other network entities, which are not limited in this embodiment of the present application.

It should be understood that the terms "system" and "network" are used interchangeably herein. The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the application described herein may be implemented, for example, in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Before describing embodiments of the present invention, FTTR technology will be briefly described.

The FTTR technology is a networking technology for replacing a network cable with an optical fiber, paving the optical fiber to each room, realizing interconnection with a home gateway by deploying an optical networking terminal, combining double-frequency Wi-Fi and guaranteeing full-house network coverage. A home gigabit all-optical networking scheme based on FTTR technology deploys a main optical modem (main ONU)/FTTR main equipment/FTTR main gateway/FTTR main ONU/MFU at a home wiring box or home center, takes the main optical modem as a core, adopts a Point-to-Multipoint (P2 MP) mode and a Point-to-Point (P2P) mode, and constructs a home optical fiber network based on an optical splitter and a single-core bidirectional optical fiber connection slave optical modem (slave ONU)/FTTR slave equipment/FTTR slave gateway/FTTR slave ONU/EFU. FTTR technology may also be applied to industry scenarios or 4G/5G traffic bearers.

Fig. 1 is a schematic structural diagram of an access network to which a control method according to an embodiment of the present invention is applied; as shown in fig. 1, the access network includes an OLT, a master ONU (also referred to as FTTR master/FTTR master gateway/FTTR master ONU/MFU/master gateway/master), and a slave ONU (also referred to as FTTR slave/FTTR slave gateway/FTTR slave ONU/EFU/slave gateway/slave); in the following embodiments of the present invention, the main ONU/FTTR main device/FTTR main gateway/FTTR main ONU/MFU/main gateway/main device is also referred to as a first type ONU or a second device, the slave ONU/FTTR slave gateway/FTTR slave ONU/EFU/slave gateway/slave device is also referred to as a second type ONU or a third device, and the OLT is also referred to as a first device.

In this illustration, the access network may include a first level network and a second level network; the first-level network comprises an OLT (or a first device) and one or more first-type ONUs (or second devices), and the second-level network comprises one or more first-type ONUs (or second devices) and one or more second-type ONUs (or third devices) connected with each first-type ONU (or second device).

The first level network may be, for example, a passive optical network (PON, passive Optical Network) or a PON system. The second-level network may be, for example, FTTR or a Fiber In-premises Networking (FIN), and the first-level network and/or the second-level network are not limited In this embodiment.

The OLT (or first device) is connected with the first-type ONU (or second device) through a first link, and the first-type ONU (or second device) is connected with the second-type ONU (or third device) through a second link. Alternatively, the first link may also be referred to as a first physical link, a first level physical link, or the like. Illustratively, the first link may also be referred to as a PON link. In fig. 1, the columnar identity between the OLT and the main ONU may represent the first link. Accordingly, the second link may also be referred to as a second physical link, a second level physical link, and so on. Illustratively, the second link may also be referred to as an FTTR link or FIN link, or the like. In fig. 1, the columnar identity between each master ONU and the corresponding slave ONU may represent the second link.

In the embodiment of the invention, the OLT (or the first device) and the second class ONU (or the third device) manage the second class ONU (or the third device) by establishing a channel, wherein the first class ONU (or the second device) is used for forwarding a management and control message between the OLT (or the first device) and the second class ONU (or the third device).

In this embodiment, a first channel may be established between the OLT (or the first device) and the first ONU (or the second device), as shown in fig. 1, where the first channel is, for example, a channel between the main ONU1 and the OLT, for example, a main ONU1-ONU management control channel (OMCC, ONU Management Control Channel), and the first channel may be used to transmit a management and control message between the OLT (or the first device) and the first ONU (or the second device). A third channel may be established between the first class ONU (or the second device) and the second class ONU (or the third device), as shown in fig. 1, taking the main ONU1 as an example, where the third channel is a channel between the main ONU1 and the slave ONU1, the slave ONU2, and the slave ONU3, respectively, for example, a slave ONU1-OMCC, a slave ONU2-OMCC, and a slave ONU3-OMCC.

In this embodiment, in order to implement unified management and control of the OLT (or the first device) on the second ONU (or the third device), a second channel of the second ONU (or the third device) is established on the first link, that is, a channel for transmitting a management and control message of the second ONU (or the third device) is established between the OLT (or the first device) and the first ONU (or the second device). As shown in fig. 1, taking a main ONU1 as an example, the second channel is, for example, a slave ONU1-OMCC, a slave ONU2-OMCC, and a slave ONU3-OMCC on the first link, so that a management message can be transmitted between the OLT (or the first device) and the second ONU (or the third device) through the second channel on the first link and the third channel on the second link, and the OLT (or the first device) and the second ONU (or the third device) can manage the second ONU (or the third device) by establishing channels (second channel and third channel). The second channel may also be referred to as a management channel, an OMCI channel, or an out-of-band OMCI channel of the OLT (or the first device) that directly manages the second class of ONUs (or the third device), and in this embodiment, the channel name is not limited.

It should be noted that the embodiments of the present application are not limited to the two-stage network shown in fig. 1, but may be applied to a three-stage network or a network with more than three stages.

Based on the access network shown in fig. 1, an embodiment of the present application provides a management and control method, where the method is applied to a first device. FIG. 2 is a flow chart of a control method according to an embodiment of the application; as shown in fig. 2, the method includes:

step 101: the first device establishes a second channel for a third device on a first link between the first device and the second device;

In this embodiment, the control method may be applied to a multi-level network as shown in fig. 1. The network comprises at least a first level network and a second level network, wherein the first level network comprises a first device and one or more second devices, and the second level network comprises one or more second devices and one or more third devices connected with ONNUs of each type.

In the embodiment of the present application, a first device is connected to a second device through a Point-to-multipoint (P2 MP) optical network (a first link or a first physical link), and the second device is connected to a third device through a P2MP optical network (a second link or a second physical link). Illustratively, the first device is typically a local side device of the access network or a network side device of the access network, such as an optical line terminal (OLT, optical Line Terminal), the second device is typically a terminal device of the access network or a user side device of the access network or a terminal device of the subscriber premises network or a user side device of the subscriber premises network, such as an FTTR master/FTTR master gateway/FTTR master ONU/MFU (Main FTTR Unit)/master gateway/master/ONU/first class ONU, and the third device is typically a terminal device of the subscriber premises network or a user side device of the subscriber premises network, such as an FTTR slave/ftslave ONU/EFU (Edge FTTR Unit)/slave ONU, and the like. The above device names are often used interchangeably herein.

The first level network may be, for example, PON or a PON system, and the second and network may be, for example, FTTR or FIN. The first link may also be referred to as a first physical link, a first level physical link, a PON link, or the like, and the second link may also be referred to as a second physical link, a second level physical link, an FTTR link, a FIN link, or the like. The present embodiment does not limit the name of the network and the name of the link.

In this embodiment, the first device establishes a second channel for the third device on the first link between the first device and the second device, which may be understood as that the first device establishes the second channel for the third device between the first device and the second device, or may be understood as that the first device establishes the vertical control interface for the third device between the first device and the second device.

Wherein a second channel is established between the first device and the second device for the third device, which is essentially the establishment of the second channel for the third device over the first link between the first device and the second device. Links refer to communication media and or connections based on communication media, such as wires, wire networks, and the like.

In some alternative embodiments of the invention, the number of second channels is one or more; in the case that the number of the second channels is one, the second channels are used for transmitting the management messages of the one or more third devices; and/or, in case the number of the second channels is a plurality, each second channel is used for transmitting a management message of a corresponding or corresponding group of third devices.

In this embodiment, the transmitted control message of the third device may be understood that the first device manages the third device through the second channel.

In this embodiment, the established second channel may have at least the following cases:

1. establishing a second channel, wherein the second channel is used for sharing all third devices under the second device;

2. establishing a separate second channel for each third device;

3. grouping third devices, each group of third devices sharing a second channel.

In the first case described above, that is, for all the third devices corresponding to each second device (e.g., the main ONU1 in fig. 1), only one second channel may be established on the first link, and the management and control messages of all the third devices corresponding to the main ONU1 may be transmitted on the established one second channel. The second case described above, i.e. for all third devices corresponding to each second device (e.g. the main ONU1 in fig. 1), may establish a second channel for each third device on the first link, as shown in fig. 1, on which the management message of each third device is transmitted. For the third case, packets may be made for all third devices corresponding to each second device (e.g., the main ONU1 in fig. 1), and one second channel is established on the first link for each packet; the management messages for the third device in each packet may be transmitted on the second channel of the corresponding group.

In embodiments of the present invention, a management message is a message for management and/or control, i.e. any message or information for management and/or control may correspond to the management message. Alternatively, the management message may also be referred to as a management message, a management control message, a management control message (MCM, management Control Messages), or an operation and maintenance management (OAM, operation Administration and Maintenance) message, or the like; alternatively, the management and control message may also be referred to as management and control information, etc., and the name of the message or the information is not limited in this embodiment.

In some alternative embodiments of the invention, the method further comprises: the first device obtains capability information of the second device based on the first link, wherein the capability information at least comprises interface capability information of the second device facing a third device.

In this embodiment, the first device may receive, through the first link, the capability information sent by the second device. Optionally, during the process that the second device accesses the first device, the second device may report the capability information to the first device. In other embodiments, the second device may report the capability information to the first device through other trigger conditions.

In this embodiment, the capability information may also be referred to as device information, interface information, or the like. The capability information at least comprises interface capability information of the second device facing the third device, and the capability information can also be understood as at least comprising interface capability information of the second device facing the third device. The interface capability information may be represented as FTTR interface information or FIN interface information on the second device, the interface capability information mainly reflecting the capabilities of the interface, such as the number of third devices that can be accessed, the type of third devices, etc.

Optionally, the capability information includes at least one of the following information: the number of physical ports, the physical port protocol, the physical port rate specification, the number of connectable third devices, the type of connectable third devices.

Wherein optionally the physical port protocol may be, for example, gigabit ethernet passive optical network (GPON, gigabit Passive Optical Network), 10G PON or the like.

The type of the connectable third device may exist in the capability information independently, or may be directly or indirectly constrained/defined by the physical port protocol and/or the physical port rate specification.

In some alternative embodiments of the present invention, the first device establishing a second channel for a third device over a first link with the second device, comprising: the first device establishes a second channel for a third device over a first link with the second device based at least on the capability information.

In this embodiment, the first device may establish a second channel for the third device based on the capability information reported by the second device. For example, the above-mentioned establishment method of the second channel may be referred to as a static method, that is, in the second channel establishment process, the third device is likely not to access the second device, and the first device only establishes the second channel for the third device based on the capability information reported by the second device.

In some alternative embodiments, the first device establishes a second channel for a third device on a first link with the second device based at least on the capability information, comprising: the first device establishes a second channel for a third device on a first link with the second device based at least on the number of physical ports and/or the number of connectable third devices.

In one example, the first device may establish a second channel for the third device based on the number of connectable third devices in the capability information. For example, if the number of connectable third devices is N, the first device may establish N second channels on the first link, that is, one second channel for each third device that can access the second device. In another example, the first device may also establish a second channel for the third device based on the number of physical ports in the capability information. For example, a second channel is established for each physical port. In other embodiments, the first device may also set up the second channel for the third device according to the number of physical ports and/or the number of connectable third devices, taking into account comprehensively.

In some alternative embodiments, the first device establishes a second channel for a third device over a first link with the second device, comprising: the first equipment receives first information sent by second equipment, and a second channel is established for third equipment on a first link between the first equipment and the second equipment; the first information is used for notifying that a second channel is established for the third device and/or notifying that a new third device accesses the second device.

In this embodiment, when the first device receives the first information sent by the second device or after receiving the first information, a second channel is established for the third device on the first link based on the first information. The above-mentioned manner of establishing the second channel may also be referred to as a dynamic manner, that is, the first device triggers the establishment of the second channel according to the first information sent by the second device.

Wherein, as an example, the first information is used for notifying the third device to establish a second channel, that is, the second device notifies the first device to establish the second channel for the third device. As another example, the first information is used for notifying that a new third device is accessed to the second device, that is, when the new third device is accessed to the second device, the second device sends the first information to the first device, and the first device can establish a second channel for the new third device according to the first information. As yet another example, the first information may also be used to inform that a second channel is set up for the third device and to inform that a new third device accesses the second device.

In some alternative embodiments, the first device establishes a second channel for a third device over a first link with the second device, comprising: the first device obtains second information, wherein the second information is used for representing information of a third device accessed by the second device; the first device establishes a second channel for a third device over a first link with the second device.

In this embodiment, the first device triggers the establishment of the second channel according to the second information sent by the second device.

The second information is used for indicating information of a third device which is accessed by the second device, namely the third device and the second device complete networking first and then the second device initiates establishment of a second channel through the second information. Optionally, the second information represents information such as the number of third devices that the second device has access to and/or the type of the third devices. The first device may establish a corresponding second channel for the accessed third device according to the number of the accessed third devices and/or information such as the type of the third device. In other embodiments, the second information may also represent information such as the number of third devices newly accessed by the second device and/or the type of the third device in a period of time. The first device may establish a corresponding second channel for the newly accessed third device according to the number of the newly accessed third devices and/or information such as the type of the third device.

Optionally, the first device may also establish a second channel for a third device on the first link with the second device based on the second information and the capability information. When the first device receives the second information sent by the second device or after receiving the second information, the first device establishes a second channel based on the second information and the capability information.

In some alternative embodiments of the invention, the method further comprises: the first device establishes a first channel for the second device on the first link, the first channel being used for transmitting a management and control message of the second device.

In this embodiment, optionally, during the process of accessing the second device to the first device, the first device may establish a first channel for the second device on the first link. Illustratively, as shown in fig. 1, taking the second device as the main ONU1 as an example, the first channel is, for example, the main ONU1-OMCC. A management message may be transmitted between the first device and the main ONU1 through the main ONU1-OMCC.

Optionally, the first device may receive the capability information sent by the second device through the first channel.

The first channel, the second channel and the third channel in the embodiments of the present invention are all logic channels, and the above channels may also be referred to as management channels.

In some alternative embodiments of the invention, the method further comprises: the first device transmitting a management and control message regarding the third device over the second channel and a third channel; wherein the third channel is a channel on the second link.

In this embodiment, the third channel is a channel between the second device and the third device (i.e. on the second link) for transmitting a management message of the third device. Optionally, during the process of accessing the second device by the third device, the second device may establish a third channel of the third device on the second link. Alternatively, the second device may also pre-establish the third channel on the second link according to the capability information. The transmission of the management and control message between the first device and the third device is achieved through the second channel on the first link and the third channel on the second link.

In some alternative embodiments of the present invention, the first device establishing a second channel for a third device over a first link with the second device, comprising: and when the first device is on line with the second device, a GEM port/connection or an XGEM port/connection is created, and a second channel is established based on the GEM port/connection or the XGEM port/connection.

In this embodiment, the second channel may be based on a GEM port (port)/GEM connection defined by GPON, or may be based on an XGEM port/XGEM connection defined by XG (S) -PON standard, or may be based on an XGEM port defined by 50G PON standard. Wherein, optionally, the GEM port may be shared by a plurality of third devices, or different third devices may correspond to different GEM ports. The XGEM port may be shared by a plurality of third devices, or different XGEM ports may be corresponding to different third devices. Referring to fig. 3, a schematic diagram of a second channel established based on GEM ports (ports) is shown.

Wherein GEM is also referred to as GPON encapsulation mode (GPON Encapsulation Method); XGEM is also referred to as XG (S) -PON encapsulation mode (XG (S) -PON Encapsulation Method). GPON is a Gigabit (Gigabit) capable passive optical network (PON, passive Optical Network); XG (S) -PON is a symmetric Passive Optical Network (PON) with 10-Gigabit capability.

In this embodiment, when the first device detects that the second device is on-line, by creating a GEM port/connection or an XGEM port/connection, the first device uses the created GEM port/connection or XGEM port/connection as the second channel.

In some alternative embodiments of the present invention, the first device establishing a second channel for a third device over a first link with the second device, comprising: the first device sends a first request to the second device, the first request being for requesting creation of a GEM port/connection or an XGEM port/connection, and a second channel being established based on the GEM port/connection or XGEM port/connection.

In this embodiment, during the creation of the second channel, the first device may also send a first request for creating a GEM port/connection or an XGEM port/connection to the second device, where the second device creates the GEM port/connection or the XGEM port/connection based on the received first request, so as to use the GEM port/connection or the XGEM port/connection as the second channel.

In some optional embodiments of the invention, the first device transmitting a management message regarding the third device over the second channel comprises: the first device sends a first management and control message through the second channel, wherein the first management and control message comprises a first message of the third device and/or addressing information of the third device.

In this embodiment, the first management and control message sent by the first device to the third device through the second channel needs to include the first message with the management and control function and the addressing information of the third device, and by using the addressing information of the third device, the second device is convenient to learn that the first management and control message is sent to the third device and the address of the target third device is explicitly determined.

In some optional embodiments of the invention, the first device transmitting a management message regarding the third device over the second channel comprises: the first device encapsulates a first message sent to the third device to obtain a first control message, and sends the first control message through the second channel; the first management and control message comprises addressing information of the third device, and the addressing information at least comprises port information of the second device corresponding to the third device and/or information of the third device; and/or the first device decapsulates the second management and control message through the second management and control message from the third device received by the second channel to obtain a second message.

In this embodiment, for downlink data, the first device performs ethernet encapsulation on a first message (such as an OMCI message or an OMCI message) as an ethernet message payload; and further encapsulating the encapsulated Ethernet message into a GEM frame or an XGEM frame. For uplink data, the first device decapsulates the management and control message (such as GEM frame message or XGEM frame message) received through the second channel according to the reverse process of the encapsulation process, so as to obtain the content of the management and control message (i.e. the second message or OMCI message) from the third device.

In some optional embodiments of the invention, the traffic-carrying entity in the uplink direction of the second channel is the same as the traffic-carrying entity in the uplink direction of the first channel between the first device and the second device.

In this embodiment, the traffic bearer entity in the uplink direction of the second channel and the traffic bearer entity in the uplink direction of the first channel between the first device and the second device share the same OMCC traffic bearer entity.

The traffic bearer entity (T-CONT, transmission Container) is a carrier for uplink bearer traffic such as GPON/XG (S) -PON/50G PON, and all GEM ports or XGEM ports are mapped to the T-CONT and scheduled by the OLT through dynamic bandwidth allocation (DBA, dynamic Bandwidth Allocation).

Based on the above embodiment, the embodiment of the present invention further provides a management and control method, where the method is applied to a second device, the second device is connected to a first device through a first link, and the second device is connected to one or more third devices through a second link. FIG. 4 is a second flow chart of a control method according to an embodiment of the present invention; as shown in fig. 4, the method includes:

step 201: the second device transmits a management and control message between the first device and the third device through a second channel established on the first link and a third channel established on the second link.

In this embodiment, the process of establishing the second channel may be described in the foregoing embodiment, which is not described in detail in this embodiment. The third device forwards a management message between the first device and the third device over the second channel.

In this embodiment, the third channel is a channel between the second device and the third device (i.e. on the second link) for transmitting a management message of the third device. For example, as shown in fig. 1, taking the second device as the master ONU1 as an example, the third channel may include a slave ONU1-OMCC, a slave ONU2-OMCC, a slave ONU3-OMCC, and so on between the master ONU1 and each slave ONU.

In some alternative embodiments of the invention, the method further comprises: the second device establishes the third channel in the process of determining that a third device is accessed to the second device; or the second device initiates establishment of the third channel after determining that the establishment of the second channel is completed.

In some alternative embodiments, during access by a third device to a second device, the second device may establish a third channel for the third device over a second link. In other alternative embodiments, the establishment of the third channel is initiated after the second device determines that the establishment of the second channel on the first link is complete. Wherein the second device may establish the third channel on a second link according to capability information of the second device. The transmission of the management and control message between the first device and the third device is achieved through the second channel on the first link and the third channel on the second link.

In some alternative embodiments of the invention, the number of second channels is one or more; in the case that the number of the second channels is one, the second channels are used for transmitting the management messages of the one or more third devices; in case the number of second channels is a plurality, each second channel is for transmitting a management message of a corresponding or corresponding group of third devices.

In some alternative embodiments of the invention, the method further comprises: the second device sends capability information of the second device to the first device, wherein the capability information at least comprises interface capability information of the second device facing a third device.

In some alternative embodiments of the invention, the method further comprises: and after the second device determines that the third device is accessed to the second device, the second device sends first information to the first device, wherein the first information is used for notifying the first device to establish a second channel for the third device and/or notifying that a new third device is accessed to the second device.

In some alternative embodiments of the invention, the method further comprises: and the second device sends second information to the first device, wherein the second information is used for representing information of a third device which the second device has access to.

The second information is used for representing information of third devices accessed by the second device, and optionally, the second information represents information such as the number of the third devices accessed by the second device and/or the type of the third devices. Alternatively, the second information may also represent information such as the number of third devices newly accessed by the second device and/or the type of the third device in a period of time.

In some alternative embodiments of the invention, the method further comprises: the second device receives a first request sent by the first device, wherein the first request is used for requesting to create a GEM port/connection or an XGEM port/connection; the second device creates a GEM port/connection or XGEM port/connection, and establishes a second channel based on the GEM port/connection or XGEM port/connection.

In this embodiment, the second device receives a first request sent by the first device, creates a GEM port/connection or an XGEM port/connection according to the first request, and uses the GEM port/connection or the XGEM port/connection as the second channel.

In some alternative embodiments of the invention, the method further comprises: and the second device determines the association relation between the second channel and the third channel.

In this embodiment, the second device has a capability of associating the second channel with the third channel, and also has a relay or forwarding capability, and forwards the management and control message of the third device to the corresponding channel and adapts the physical link protocol. Illustratively, a forwarding rule or a relay rule may be obtained in the second device, and an association relationship between the second channel and the third channel is determined based on the forwarding rule or the relay rule. In some examples, the forwarding rule or relay rule may be an explicit association rule, such as an association or mapping of the second channel and the third channel. The second device may implement forwarding of the management and control message between the second channel and the third channel according to the forwarding rule. In other examples, the forwarding rule or relay rule may be an implicit association rule, e.g., the channel identities of the second and third channels are the same for the same third device, and the second device may forward the management message between the second and third channels of the same channel identity according to the forwarding rule.

Wherein, optionally, the forwarding rule or the relay rule may be generated locally by the second device, for example, after the second channel and the third channel are established. Alternatively, the forwarding rules or relay rules described above may be configured remotely by other devices, such as by the first device or a management system.

In some alternative embodiments, the second device transmitting a management message between the first device and the third device over a second channel established over the first link and a third channel established over the second link, comprising: and the second equipment forwards the management and control information transmitted by the first equipment through the second channel to a corresponding third channel based on the association relation, or forwards the management and control information transmitted by the third equipment through the third channel to a corresponding second channel based on the association relation.

In some alternative embodiments, the second device transmitting a management message between the first device and the third device over a second channel established over the first link and a third channel established over the second link, comprising: the second device receives a third management and control message sent by the first device through the second channel, decapsulates the third management and control message to obtain a third message and addressing information of the third device in the third management and control message, and sends the third message to the third device through the third channel according to the addressing information; and/or the second device receives a fourth message sent by the third device through the third channel, encapsulates the fourth message to obtain a fourth management and control message, and sends the fourth management and control information to the first device through the second channel; the fourth management and control message comprises addressing information of the third device, and the addressing information at least comprises information of the third device and/or port information of a second device corresponding to the third device.

In this embodiment, for downlink transmission, the second device receives, on the second channel, a management and control message (such as a GEM frame message or XGEM frame message) sent by the first device, and first performs decapsulation to obtain an ethernet message, and further performs decapsulation on the ethernet message to obtain a management and control message content (such as a third message and an OMCI message) and addressing information of a destination third device, and forwards the third message to the third device according to the addressing information. For upstream transmission, the second device receives a fourth message (or OMCI message) from the third device on a third channel (or a user side PON channel). And encapsulating the fourth message as a payload of the Ethernet message to obtain the Ethernet message, and further encapsulating the Ethernet message to obtain a fourth management and control message (such as a GEM frame or an XGEM frame), and sending the fourth management and control message (such as the GEM frame or the XGEM frame) to the first device through the second channel.

The embodiment of the invention also provides a control method which is applied to the third equipment, and one or more of the third equipment is connected with the second equipment through a second link; the second device is connected with the first device through a first link; the method comprises the following steps: and the third device transmits a management and control message carrying a first identifier through a third channel established on the second link, wherein the first identifier is used for indicating whether the management and control message is sent to the second device or the first device.

In this embodiment, the third device receives and processes, through a third channel, the management and control message forwarded by the second device.

In some alternative embodiments, the management and control message is an ONU management and control interface OMCI message; the method further comprises the steps of: the third device takes a transaction association identification (Transaction correlation identifier) field in an OMCI message as the first identification; and/or the third device uses a device identification (Device identifier) field in the OMCI message as the first identification.

In this embodiment, for a management and control message (or OMCI message) sent by the third device, the first identifier may be used as a transaction association identifier (Transaction correlation identifier) field in the OMCI message, to indicate whether the destination of the message is the second device or the first device; alternatively, the destination of the message may be indicated as the second device or the first device by a device identification (Device identifier) field in the OMCI message as the first identification, or may be indicated as the second device or the first device by a combination of a transaction association identification (Transaction correlation identifier) field and a device identification (Device identifier) field.

In some alternative embodiments, the third device communicates with the second device when the second device is online using an OMCI channel defined by the GPON standard; and/or the third device communicates with the second device when the second device is on-line using an OMCI channel defined by XG (S) -PON or 50G PON standard.

According to the technical scheme, a second channel is established for a third device on a first link through a first device, and the second device transmits a management and control message between the first device and the third device through the second channel established on the first link and the third channel established on the second link; in this way, the third device which is not visible to the first device can indirectly associate with the third device through the second channel on the first link, and on the basis of transmitting the control message between the third device and the second device through the third channel, the first device can obtain the control message of the third device relayed or forwarded by the second device through the second channel, thereby realizing the unified control of the first device to the multi-level network (system); the tree topology network supporting the cascade connection of the point-to-multipoint system is subjected to uniform resource control, and the operation and maintenance efficiency is improved efficiently; meanwhile, the capability of end-to-end network slicing and agility construction of the FTTx optical access system after cascading of the multi-stage point-to-multipoint system is improved for the services of the computing network and the cloud network.

Based on the above embodiment, the embodiment of the invention also provides a control device, which is applied to the first equipment. FIG. 5 is a schematic diagram of a control device according to an embodiment of the present invention; as shown in fig. 5, the apparatus comprises a first processing unit 31 for establishing a second channel for a third device on a first link with the second device;

In some alternative embodiments of the invention, the apparatus further comprises a first communication unit 32 for obtaining capability information of the second device based on the first link, the capability information comprising at least interface capability information of the second device for a third device.

In some alternative embodiments of the invention, the capability information includes at least one of the following:

In some alternative embodiments of the invention, the first processing unit 31 is configured to establish a second channel for a third device on a first link with the second device based at least on the capability information.

In some alternative embodiments of the invention, the first processing unit 31 is configured to establish a second channel for a third device on a first link with the second device based at least on the number of physical ports and/or the number of connectable third devices.

In some alternative embodiments of the present invention, the apparatus further comprises a first communication unit 32 for receiving the first information sent by the second device; the first information is used for notifying that a second channel is established for the third equipment and/or notifying that a new third equipment is accessed to the second equipment;

the first processing unit 31 is configured to establish a second channel for a third device on a first link with the second device.

In some alternative embodiments of the invention, the apparatus further comprises a first communication unit 32 for obtaining second information, the second information being information representing a third device to which the second device has access;

In some alternative embodiments of the invention, the number of second channels is one or more;

In some alternative embodiments of the present invention, the first processing unit 31 is further configured to establish a first channel for the second device on the first link, where the first channel is used to transmit a management message of the second device.

In some alternative embodiments of the invention, the apparatus further comprises a first communication unit 32 for transmitting a management message regarding the third device via the second channel and a third channel; wherein the third channel is a channel on the second link.

In some optional embodiments of the invention, the first processing unit 31 is configured to create a GEM port/connection or an XGEM port/connection when the second device is online, and establish a second channel based on the GEM port/connection or the XGEM port/connection.

In some optional embodiments of the invention, the apparatus further comprises a first communication unit 32, and the first processing unit 31 is configured to send a first request to the second device through the first communication unit, where the first request is used to request creation of a GEM port/connection or an XGEM port/connection, and establish a second channel based on the GEM port/connection or XGEM port/connection.

In some alternative embodiments of the present invention, the first communication unit 32 is configured to send a first management and control message through the second channel, where the first management and control message includes a first message of the third device and/or addressing information of the third device.

In some optional embodiments of the present invention, the first communication unit 32 is configured to encapsulate a first message sent to the third device to obtain a first management and control message, and send the first management and control message through the second channel; the first management and control message comprises addressing information of the third device, and the addressing information at least comprises port information of the second device corresponding to the third device and/or information of the third device; and/or, decapsulating the second management and control message received through the second channel from the third device to obtain a second message.

In the embodiment of the present invention, the first processing unit 31 in the device may be implemented by a central processing unit (CPU, central Processing Unit), a digital signal processor (DSP, digital Signal Processor), a micro control unit (MCU, microcontroller Unit) or a programmable gate array (FPGA, field-Programmable Gate Array) in practical application; the first communication unit 32 in the device can be realized by a communication module (including a basic communication suite, an operating system, a communication module, a standardized interface, a standardized protocol, and the like) and a transceiver antenna in practical application.

The embodiment of the invention also provides a control device which is applied to the second equipment, wherein the second equipment is connected with the first equipment through the first link, and the second equipment is connected with one or more third equipment through the second link. FIG. 6 is a schematic diagram of a second embodiment of a control device; as shown in fig. 6, the apparatus comprises a transmission unit 41 for transmitting a management message between the first device and the third device via a second channel established over the first link and a third channel established over the second link.

In some optional embodiments of the present invention, the transmitting unit 41 is further configured to send capability information of the second device to the first device, where the capability information includes at least interface capability information of the second device facing a third device.

In some optional embodiments of the present invention, the transmission unit 41 is further configured to send, after determining that a third device accesses the second device, first information to the first device, where the first information is used to notify the first device to establish a second channel for the third device and/or notify that a new third device accesses the second device.

In some optional embodiments of the invention, the apparatus further comprises a second processing unit 42 configured to determine an association relationship between the second channel and the third channel.

In some optional embodiments of the present invention, the transmitting unit 41 is configured to forward, based on the association relationship, the management message transmitted by the first device through the second channel to the corresponding third channel, or forward, based on the association relationship, the management message transmitted by the third device through the third channel to the corresponding second channel.

In some alternative embodiments of the present invention, the transmission unit 41 is further configured to send second information to the first device, where the second information is information indicating a third device to which the second device has access.

In some optional embodiments of the present invention, the transmission unit 41 is further configured to establish the third channel in a process of determining that a third device accesses the second device; or after determining that the second channel is established, initiating establishment of the third channel.

In some alternative embodiments of the invention, the apparatus further comprises a second processing unit 42;

the transmission unit 41 is further configured to receive a first request sent by the first device, where the first request is used to request creation of a GEM port/connection or an XGEM port/connection;

the second processing unit 42 is configured to create a GEM port/connection or an XGEM port/connection, and establish a second channel based on the GEM port/connection or the XGEM port/connection.

In some optional embodiments of the present invention, the transmission unit 41 is configured to receive a third management and control message sent by the first device through the second channel, decapsulate the third management and control message, obtain a third message and addressing information of a third device in the third management and control message, and send the third message to the third device through the third channel according to the addressing information; and/or receiving a fourth message sent by the third device through the third channel, packaging the fourth message to obtain a fourth management and control message, and sending the fourth management and control message to the first device through the second channel; the fourth management and control message comprises addressing information of the third device, and the addressing information at least comprises information of the third device and/or port information of a second device corresponding to the third device.

In the embodiment of the present invention, the second processing unit 42 in the device may be implemented by CPU, DSP, MCU or FPGA in practical application; the transmission unit 41 in the device can be realized by a communication module (including a basic communication suite, an operating system, a communication module, a standardized interface, a standardized protocol and the like) and a receiving and transmitting antenna in practical application.

The embodiment of the invention also provides a control device which is applied to the third equipment, and one or more of the third equipment is connected with the second equipment through a second link; the second device is connected with the first device through a first link; the device comprises a sending unit, a first device and a second device, wherein the sending unit is used for transmitting a management and control message carrying a first identifier through a third channel established on the second link, and the first identifier is used for indicating whether the management and control message is sent to the second device or the first device.

In some optional embodiments, the apparatus further comprises a processing unit configured to use a transaction association identifier (Transaction correlation identifier) field in an OMCI message as the first identifier; and/or, using (Device identifier) a device identification field in the OMCI message as the first identification.

In the embodiment of the invention, the processing unit in the device can be realized by CPU, DSP, MCU or FPGA in practical application; the transmitting unit in the device can be realized through a communication module (comprising a basic communication suite, an operating system, a communication module, a standardized interface, a protocol and the like) and a receiving and transmitting antenna in practical application.

The embodiment of the invention also provides a control method, which comprises the following steps: the second device transmits at least one of the following information to the first device: capability information, first information and second information of the second equipment; the capability information at least comprises interface capability information of the second device facing a third device; the first information is used for notifying that a second channel is established for the third equipment and/or notifying that a new third equipment is accessed to the second equipment; the second information is used for representing information of a third device accessed by the second device; the first device establishes a second channel for a third device over a first link with the second device based on the at least one item of information obtained.

In this embodiment, as an implementation manner, during the process of accessing the second device to the first device, the second device may report the capability information to the first device, where the capability information may also be referred to as device information, interface information, and so on. The capability information at least comprises interface capability information of the second device facing the third device, and the capability information can also be understood as at least comprising interface capability information of the second device facing the third device. The interface capability information may be represented as FTTR interface information or FIN interface information on the second device, the interface capability information mainly reflecting the capabilities of the interface, such as the number of third devices that can be accessed, the type of third devices, etc. The first device may establish a second channel for the third device based on the capability information reported by the second device. For example, the above-mentioned establishment method of the second channel may be referred to as a static method, that is, in the second channel establishment process, the third device is likely not to access the second device, and the first device only establishes the second channel for the third device based on the capability information reported by the second device.

In some alternative embodiments, the first device establishes a second channel for a third device on a first link with the second device based at least on the number of physical ports and/or the number of connectable third devices.

In this embodiment, the first device may establish a second channel for the third device according to the number of connectable third devices in the capability information. For example, if the number of connectable third devices is N, the first device may establish N second channels on the first link, that is, one second channel for each third device that can access the second device. Alternatively, the first device may also establish a second channel for the third device according to the number of physical ports in the capability information. For example, a second channel is established for each physical port. In other embodiments, the first device may also set up the second channel for the third device according to the number of physical ports and/or the number of connectable third devices, taking into account comprehensively.

As another embodiment, the first device may trigger the establishment of the second channel according to the first information sent by the second device. Wherein, as an example, the first information is used for notifying the third device to establish a second channel, that is, the second device notifies the first device to establish the second channel for the third device. As another example, the first information is used for notifying that a new third device is accessed to the second device, that is, when the new third device is accessed to the second device, the second device sends the first information to the first device, and the first device can establish a second channel for the new third device according to the first information. As yet another example, the first information may also be used to inform that a second channel is set up for the third device and to inform that a new third device accesses the second device.

Wherein optionally, the second device sends the first information to the first device after determining that the third device accesses the second device.

As yet another embodiment, the first device may trigger the establishment of the second channel based on the second information sent by the second device. The second information is used for indicating information of a third device which is accessed by the second device, namely the third device and the second device complete networking first and then the second device initiates establishment of a second channel through the second information. Optionally, the second information represents information such as the number of third devices that the second device has access to and/or the type of the third devices. The first device may establish a corresponding second channel for the accessed third device according to the number of the accessed third devices and/or information such as the type of the third device. In other embodiments, the second information may also represent information such as the number of third devices newly accessed by the second device and/or the type of the third device in a period of time. The first device may establish a corresponding second channel for the newly accessed third device according to the number of the newly accessed third devices and/or information such as the type of the third device.

In some alternative embodiments, the number of second channels is one or more; in the case that the number of the second channels is one, the second channels are used for transmitting the management messages of the one or more third devices; and/or, in case the number of the second channels is a plurality, each second channel is used for transmitting a management message of a corresponding or corresponding group of third devices.

In some alternative embodiments, the method further comprises: the first device establishes a first channel for the second device on the first link, the first channel being used for transmitting a management and control message of the second device.

In some alternative embodiments, the method further comprises: the first device transmitting a management and control message regarding the third device over the second channel and a third channel; wherein the third channel is a channel on the second link. Correspondingly, the second device transmits the management and control message between the first device and the third device through a second channel established on the first link and a third channel established on the second link

In some alternative embodiments, the method further comprises: the first device establishing a second channel for a third device over a first link with the second device, comprising: and when the first device is on line with the second device, a GEM port/connection or an XGEM port/connection is created, and a second channel is established based on the GEM port/connection or the XGEM port/connection.

In some alternative embodiments, the first device establishes a second channel for a third device over a first link with the second device, comprising: the first device sends a first request to the second device, the first request being for requesting creation of a GEM port/connection or an XGEM port/connection, and a second channel being established based on the GEM port/connection or XGEM port/connection. Correspondingly, the second device receives a first request sent by the first device, wherein the first request is used for requesting to create a GEM port/connection or an XGEM port/connection; the second device creates a GEM port/connection or XGEM port/connection, and establishes a second channel based on the GEM port/connection or XGEM port/connection.

In some alternative embodiments, the method further comprises: and the second device determines the association relation between the second channel and the third channel.

In some alternative embodiments, the method further comprises: the second device establishes the third channel in the process of determining that a third device is accessed to the second device; or the second device initiates establishment of the third channel after determining that the establishment of the second channel is completed.

Based on the above embodiment, the embodiment of the invention also provides a control device, which is applied to the first equipment. The device comprises a second communication unit and a third processing unit;

the second communication unit is configured to receive at least one of the following information sent by the second device: capability information, first information and second information of the second equipment; the capability information at least comprises interface capability information of the second device facing a third device; the first information is used for notifying that a second channel is established for the third equipment and/or notifying that a new third equipment is accessed to the second equipment; the second information is used for representing information of a third device accessed by the second device;

The third processing unit is configured to establish a second channel for a third device on the first link with the second device based on the obtained at least one item of information.

In some alternative embodiments, the capability information includes at least one of the following: the number of physical ports, the physical port protocol, the physical port rate specification, the number of connectable third devices, the type of connectable third devices.

In some alternative embodiments, the third processing unit is configured to establish a second channel for a third device over a first link with the second device based at least on the capability information.

In some alternative embodiments, the third processing unit is configured to establish a second channel for a third device on a first link with the second device based at least on the number of physical ports and/or the number of connectable third devices.

In some alternative embodiments, the number of second channels is one or more;

in the case that the number of the second channels is one, the second channels are used for transmitting the management messages of the one or more third devices; and/or, in case the number of the second channels is a plurality, each second channel is used for transmitting a management message of a corresponding or corresponding group of third devices.

In some optional embodiments, the third processing unit is further configured to establish a first channel for the second device on the first link, where the first channel is used to transmit a management message of the second device.

In some alternative embodiments, the second communication unit is further configured to transmit a management message regarding the third device through the second channel and a third channel; wherein the third channel is a channel on the second link.

In some optional embodiments, the third processing unit is configured to create a GEM port/connection or an XGEM port/connection when the second device is online, and establish a second channel based on the GEM port/connection or the XGEM port/connection.

In some optional embodiments, the third processing unit is configured to send, to the second device through the second communication unit, a first request, where the first request is used to request creation of a GEM port/connection or an XGEM port/connection, and establish a second channel based on the GEM port/connection or the XGEM port/connection.

In some alternative embodiments, the second communication unit is configured to send a first management and control message through the second channel, where the first management and control message includes a first message of the third device and/or addressing information of the third device.

In some optional embodiments, the second communication unit is configured to encapsulate a first message sent to the third device to obtain a first management and control message, and send the first management and control message through the second channel; the first management and control message comprises addressing information of the third device, and the addressing information at least comprises port information of the second device corresponding to the third device and/or information of the third device; and/or, decapsulating the second management and control message received through the second channel from the third device to obtain a second message.

In some alternative embodiments, the traffic-bearing entity in the upstream direction of the second channel is the same as the traffic-bearing entity in the upstream direction of the first channel between the first device and the second device.

The embodiment of the invention also provides a control device which is applied to the second equipment. The apparatus comprises a third communication unit for transmitting to the first device at least one of the following information: capability information, first information and second information of the second equipment; the capability information at least comprises interface capability information of the second device facing a third device; the first information is used for notifying that a second channel is established for the third equipment and/or notifying that a new third equipment is accessed to the second equipment; the second information is used for representing information of a third device accessed by the second device; the at least one item of information is transmitted for the first device to establish a second channel for a third device over a first link with the second device.

In some alternative embodiments, the number of second channels is one or more;

In some optional embodiments, the apparatus further includes a fourth processing unit configured to determine an association relationship between the second channel and the third channel.

In some optional embodiments, the third communication unit is configured to forward, based on the association, the management and control message transmitted by the first device through the second channel to a corresponding third channel, or forward, based on the association, the management and control message transmitted by the third device through the third channel to a corresponding second channel.

In some optional embodiments, the apparatus further comprises a fourth processing unit configured to establish the third channel in determining that a third device accesses the second device; or after determining that the second channel is established, initiating establishment of the third channel.

In some alternative embodiments, the apparatus further comprises a fourth processing unit;

the third communication unit is further configured to receive a first request sent by the first device, where the first request is used to request creation of a GEM port/connection or an XGEM port/connection;

the fourth processing unit is configured to create a GEM port/connection or an XGEM port/connection, and establish a second channel based on the GEM port/connection or the XGEM port/connection.

In some optional embodiments, the third communication unit is configured to receive, through the second channel, a third management and control message sent by the first device, obtain a third message and addressing information of a third device in the third management and control message, and send, according to the addressing information, the third message to the third device through the third channel; and/or receiving a fourth message sent by the third device through the third channel, packaging the fourth message to obtain a fourth management and control message, and sending the fourth management and control message to the first device through the second channel; the fourth management and control message comprises addressing information of the third device, and the addressing information at least comprises information of the third device and/or port information of a second device corresponding to the third device.

The embodiment of the invention also provides a control method which is applied to the first equipment, wherein the first equipment is connected with one or more second equipment through a first link, and the second equipment is connected with one or more third equipment through a second link. The method comprises the following steps: the first device sends a management and control message through a second channel, wherein the management and control message comprises the first message of the third device and/or addressing information of the third device; wherein the second channel is a channel established by the first device for a third device on a first link with the second device.

In some alternative embodiments, the first device sends a first management message over a second channel, including: the first device encapsulates a first message sent to the third device to obtain a first control message, and sends the first control message through the second channel; the first management and control message comprises addressing information of the third device, and the addressing information at least comprises port information of the second device corresponding to the third device and/or information of the third device.

In some alternative embodiments, the method further comprises: and the first device decapsulates the second management and control message through the second management and control message received by the second channel from the third device to obtain a second message.

In some alternative embodiments, the method further comprises: the first device obtains capability information of the second device based on the first link, wherein the capability information at least comprises interface capability information of the second device facing a third device.

In some alternative embodiments, the method further comprises: the capability information includes at least one of the following: the number of physical ports, the physical port protocol, the physical port rate specification, the number of connectable third devices, the type of connectable third devices.

In some alternative embodiments, the method further comprises: the first device establishes a second channel for a third device over a first link with the second device based at least on the capability information.

In some alternative embodiments, the first device establishes a second channel for a third device on a first link with the second device based at least on the capability information, including: the first device establishes a second channel for a third device on a first link with the second device based at least on the number of physical ports and/or the number of connectable third devices.

In some alternative embodiments, the method further comprises: the first equipment receives first information sent by second equipment, and a second channel is established for third equipment on a first link between the first equipment and the second equipment; the first information is used for notifying that a second channel is established for the third device and/or notifying that a new third device accesses the second device.

In some alternative embodiments, the method further comprises: the first device obtains second information, wherein the second information is used for representing information of a third device accessed by the second device; the first device establishes a second channel for a third device over a first link with the second device.

In some alternative embodiments, the first device sends a first management message over a second channel, including: the first device transmitting a first management and control message regarding the third device over the second channel and a third channel; wherein the third channel is a channel on the second link.

In some alternative embodiments, the method further comprises: and when the first device is on line with the second device, a GEM port/connection or an XGEM port/connection is created, and a second channel is established based on the GEM port/connection or the XGEM port/connection.

In some alternative embodiments, the method further comprises: the first device sends a first request to the second device, the first request being for requesting creation of a GEM port/connection or an XGEM port/connection, and a second channel being established based on the GEM port/connection or XGEM port/connection.

In some alternative embodiments, the first device sends a first management message over a second channel, including: the first message sent to the third device is encapsulated to obtain a first control message, and the first control message is sent through the second channel; the first management and control message comprises addressing information of the third device, and the addressing information at least comprises port information of the second device corresponding to the third device and/or information of the third device.

In some alternative embodiments, the method further comprises: and decapsulating the second management and control message received by the second channel from the third device to obtain a second message.

Based on the above embodiment, the embodiment of the present invention further provides a control method, where the method is applied to a second device, and the method includes: the second device receives the control message through a second channel and sends the control message to a third device through a third channel; the control message comprises a first message of the third device and/or addressing information of the third device; wherein the second channel is a channel established by the first device for a third device on a first link with the second device.

In some alternative embodiments, the second device receives a management and control message through a second channel, and sends the management and control message to a third device through a third channel, including: the second device receives a third management and control message sent by the first device through the second channel to obtain a third message and addressing information of the third device in the third management and control message, and sends the third message to the third device through the third channel according to the addressing information.

In some alternative embodiments, the method further comprises: the second device receives a fourth message sent by the third device through the third channel, encapsulates the fourth message to obtain a fourth management and control message, and sends the fourth management and control information to the first device through the second channel; the fourth management and control message comprises addressing information of the third device, and the addressing information at least comprises information of the third device and/or port information of a second device corresponding to the third device.

In some alternative embodiments, the method further comprises: and the second equipment forwards the management and control information transmitted by the first equipment through the second channel to a corresponding third channel based on the association relation, or forwards the management and control information transmitted by the third equipment through the third channel to a corresponding second channel based on the association relation.

In some alternative embodiments, the method further comprises: the second device sends capability information of the second device to the first device, wherein the capability information at least comprises interface capability information of the second device facing a third device.

In some alternative embodiments, the method further comprises: and after the second device determines that the third device is accessed to the second device, the second device sends first information to the first device, wherein the first information is used for notifying the first device to establish a second channel for the third device and/or notifying that a new third device is accessed to the second device.

In some alternative embodiments, the number of second channels is one or more;

In some alternative embodiments, the method further comprises: and the second device sends second information to the first device, wherein the second information is used for representing information of a third device which the second device has access to.

In some alternative embodiments, the method further comprises: the second device receives a first request sent by the first device, wherein the first request is used for requesting to create a GEM port/connection or an XGEM port/connection; the second device creates a GEM port/connection or XGEM port/connection, and establishes a second channel based on the GEM port/connection or XGEM port/connection.

Based on the foregoing embodiments, an embodiment of the present invention further provides a management and control apparatus, where the apparatus is applied to a first device, and the apparatus includes: a fourth communication unit, configured to send a management and control message through a second channel, where the management and control message includes a first message of the third device and/or addressing information of the third device; wherein the second channel is a channel established by the first device for a third device on a first link with the second device.

In some optional embodiments, the fourth communication unit is configured to encapsulate a first message sent to the third device to obtain a first management and control message, and send the first management and control message through the second channel; the first management and control message comprises addressing information of the third device, and the addressing information at least comprises port information of the second device corresponding to the third device and/or information of the third device.

In some optional embodiments, the fourth communication unit is further configured to decapsulate the second management and control message received through the second channel from the third device to obtain a second message.

In some optional embodiments, the fourth communication unit is further configured to obtain capability information of the second device based on the first link, where the capability information includes at least interface capability information of the second device for a third device.

In some alternative embodiments, the apparatus further comprises a fifth processing unit to establish a second channel for a third device over a first link with the second device based at least on the capability information.

In some alternative embodiments, the fifth processing unit is configured to establish a second channel for the third device on the first link with the second device based at least on the number of physical ports and/or the number of connectable third devices.

In some alternative embodiments, the apparatus further comprises a fifth processing unit;

the fourth communication unit is further configured to receive first information sent by a second device, where the first information is used to notify that a second channel is established for the third device and/or notify that a new third device is accessed to the second device;

the fifth processing unit is configured to establish a second channel for a third device on a first link with the second device.

the fourth communication unit is further configured to obtain second information, where the second information is used to indicate information of a third device to which the second device has been connected;

In some alternative embodiments, the apparatus further comprises a fifth processing unit configured to establish a first channel for the second device over the first link, the first channel being configured to transmit a management message of the second device.

In some alternative embodiments, the fourth communication unit is configured to transmit a first management message regarding the third device through the second channel and a third channel; wherein the third channel is a channel on the second link.

In some optional embodiments, the apparatus further comprises a fifth processing unit configured to create a GEM port/connection or XGEM port/connection when the second device is online, and to establish a second channel based on the GEM port/connection or XGEM port/connection.

In some optional embodiments, the fourth communication unit is further configured to send a first request to the second device, where the first request is used to request creation of a GEM port/connection or an XGEM port/connection, and establish a second channel based on the GEM port/connection or XGEM port/connection.

The embodiment of the invention also provides a control device, which is applied to the second equipment and comprises: a fifth communication unit, configured to receive a management and control message through a second channel, and send the management and control message to a third device through a third channel; the control message comprises a first message of the third device and/or addressing information of the third device; wherein the second channel is a channel established by the first device for a third device on a first link with the second device.

In some optional embodiments, the fifth communication unit is configured to receive, through the second channel, a third management and control message sent by the first device, obtain a third message, and address information of a third device in the third management and control message, and send, according to the address information, the third message to the third device through the third channel.

In some optional embodiments, the fifth communication unit is further configured to receive a fourth message sent by the third device through the third channel, encapsulate the fourth message to obtain a fourth management and control message, and send the fourth management and control information to the first device through the second channel; the fourth management and control message comprises addressing information of the third device, and the addressing information at least comprises information of the third device and/or port information of a second device corresponding to the third device.

In some optional embodiments, the apparatus further includes a sixth processing unit configured to determine an association relationship between the second channel and the third channel.

In some optional embodiments, the fifth communication unit is configured to forward, based on the association relationship, the management and control message transmitted by the first device through the second channel to the corresponding third channel, or forward, based on the association relationship, the management and control message transmitted by the third device through the third channel to the corresponding second channel.

In some optional embodiments, the fifth communication unit is further configured to send capability information of the second device to the first device, where the capability information includes at least interface capability information of the second device facing a third device.

In some optional embodiments, the fifth communication unit is further configured to send, after determining that a third device accesses the second device, first information to the first device, where the first information is used to notify the first device to establish a second channel for the third device and/or notify that a new third device accesses the second device.

In some alternative embodiments, the number of second channels is one or more;

In some alternative embodiments, the fifth communication unit is further configured to send second information to the first device, where the second information is information indicating a third device to which the second device has access.

In some optional embodiments, the apparatus further comprises a sixth processing unit configured to establish the third channel during a process of determining that a third device accesses the second device; or after determining that the second channel is established, initiating establishment of the third channel.

In some alternative embodiments, the apparatus further comprises a sixth processing unit;

the fifth communication unit is further configured to receive a first request sent by the first device, where the first request is used to request creation of a GEM port/connection or an XGEM port/connection;

the sixth processing unit is configured to create a GEM port/connection or an XGEM port/connection, and establish a second channel based on the GEM port/connection or the XGEM port/connection.

The embodiment of the invention also provides a communication device which is the first device, the second device or the third device. Fig. 7 is a schematic diagram of a hardware composition structure of a communication device according to an embodiment of the present invention, as shown in fig. 7, where the communication device includes a memory 52, a processor 51, and a computer program stored in the memory 52 and capable of running on the processor 51, and when the processor 51 executes the program, the steps of the control method according to the embodiment of the present invention applied to the first device are implemented; or, the processor 51 implements the step of the control method of the second device to which the embodiment of the present invention is applied when executing the program; alternatively, the processor 51 implements the steps of the control method of the third device to which the embodiment of the present invention is applied when executing the program.

Optionally, the communication device further comprises at least one network interface 53. Wherein the various components of the communication device are coupled together by a bus system 54. It is understood that the bus system 54 is used to enable connected communications between these components. The bus system 54 includes a power bus, a control bus, and a status signal bus in addition to the data bus. But for clarity of illustration the various buses are labeled as bus system 54 in fig. 7.

It will be appreciated that the memory 52 can be either volatile memory or nonvolatile memory, and can include both volatile and nonvolatile memory. Wherein the nonvolatile Memory may be Read Only Memory (ROM), programmable Read Only Memory (PROM, programmable Read-Only Memory), erasable programmable Read Only Memory (EPROM, erasable Programmable Read-Only Memory), electrically erasable programmable Read Only Memory (EEPROM, electrically Erasable Programmable Read-Only Memory), magnetic random access Memory (FRAM, ferromagnetic Random Access Memory), flash Memory (Flash Memory), magnetic surface Memory, optical disk, or compact disk Read Only Memory (CD-ROM, compact Disc Read-Only Memory); the magnetic surface memory may be a disk memory or a tape memory. The volatile memory may be random access memory (RAM, random Access Memory), which acts as external cache memory. By way of example, and not limitation, many forms of RAM are available, such as static random access memory (SRAM, static Random Access Memory), synchronous static random access memory (SSRAM, synchronous Static Random Access Memory), dynamic random access memory (DRAM, dynamic Random Access Memory), synchronous dynamic random access memory (SDRAM, synchronous Dynamic Random Access Memory), double data rate synchronous dynamic random access memory (ddr SDRAM, double Data Rate Synchronous Dynamic Random Access Memory), enhanced synchronous dynamic random access memory (ESDRAM, enhanced Synchronous Dynamic Random Access Memory), synchronous link dynamic random access memory (SLDRAM, syncLink Dynamic Random Access Memory), direct memory bus random access memory (DRRAM, direct Rambus Random Access Memory). The memory 52 described in embodiments of the present invention is intended to comprise, without being limited to, these and any other suitable types of memory.

The method disclosed in the above embodiment of the present invention may be applied to the processor 51 or implemented by the processor 51. The processor 51 may be an integrated circuit chip with signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in the processor 51 or by instructions in the form of software. The processor 51 may be a general purpose processor, DSP, or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. The processor 51 may implement or perform the methods, steps and logic blocks disclosed in embodiments of the present invention. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiment of the invention can be directly embodied in the hardware of the decoding processor or can be implemented by combining hardware and software modules in the decoding processor. The software modules may be located in a storage medium in a memory 52. The processor 51 reads information in the memory 52 and, in combination with its hardware, performs the steps of the method as described above.

In an exemplary embodiment, the communication device may be implemented by one or more application specific integrated circuits (ASIC, application Specific Integrated Circuit), DSP, programmable logic device (PLD, programmable Logic Device), complex programmable logic device (CPLD, complex Programmable Logic Device), FPGA, general purpose processor, controller, MCU, microprocessor, or other electronic element for performing the aforementioned methods.

In an exemplary embodiment, the present application also provides a computer readable storage medium, such as a memory 52, comprising a computer program executable by the processor 51 of the communication device to perform the steps of the method described above. The computer readable storage medium may be FRAM, ROM, PROM, EPROM, EEPROM, flash Memory, magnetic surface Memory, optical disk, or CD-ROM; but may be a variety of devices including one or any combination of the above memories.

The embodiment of the application also provides a computer readable storage medium, on which a computer program is stored, which when executed by a processor implements the steps of the management and control method of the embodiment of the application applied to the first device; or, when the program is executed by a processor, implementing the steps of the control method of the embodiment of the present application applied to the second device; or, the program when executed by the processor implements the steps of the management and control method of the third device to which the embodiment of the present application is applied.

The methods disclosed in the method embodiments provided by the application can be arbitrarily combined under the condition of no conflict to obtain a new method embodiment.

The features disclosed in the several product embodiments provided by the application can be combined arbitrarily under the condition of no conflict to obtain new product embodiments.

The features disclosed in the embodiments of the method or the apparatus provided by the application can be arbitrarily combined without conflict to obtain new embodiments of the method or the apparatus.

In the several embodiments provided by the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above described device embodiments are only illustrative, e.g. the division of the units is only one logical function division, and there may be other divisions in practice, such as: multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. In addition, the various components shown or discussed may be coupled or directly coupled or communicatively coupled to each other via some interface, whether indirectly coupled or communicatively coupled to devices or units, whether electrically, mechanically, or otherwise.

The units described as separate units may or may not be physically separate, and units displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units; some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated in one processing unit, or each unit may be separately used as one unit, or two or more units may be integrated in one unit; the integrated units may be implemented in hardware or in hardware plus software functional units.

Those of ordinary skill in the art will appreciate that: all or part of the steps for implementing the above method embodiments may be implemented by hardware associated with program instructions, where the foregoing program may be stored in a computer readable storage medium, and when executed, the program performs steps including the above method embodiments; and the aforementioned storage medium includes: a removable storage device, ROM, RAM, magnetic or optical disk, or other medium capable of storing program code.

Alternatively, the above-described integrated units of the present invention may be stored in a computer-readable storage medium if implemented in the form of software functional modules and sold or used as separate products. Based on such understanding, the technical solutions of the embodiments of the present invention may be embodied in essence or a part contributing to the prior art in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a removable storage device, ROM, RAM, magnetic or optical disk, or other medium capable of storing program code.

The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method of controlling, the method being applied to a first device, the method comprising:

the first device is connected with one or more second devices through a first link, and the second device is connected with one or more third devices through a second link.

2. The method according to claim 1, wherein the method further comprises:

the first device obtains capability information of the second device based on the first link, wherein the capability information at least comprises interface capability information of the second device facing a third device.

3. The method of claim 2, wherein the capability information comprises at least one of the following:

4. A method according to claim 2 or 3, wherein the first device establishing a second channel for a third device over a first link with the second device, comprising:

the first device establishes a second channel for a third device over a first link with the second device based at least on the capability information.

5. The method of claim 3 or 4, wherein the first device establishing a second channel for a third device on a first link with the second device based at least on the capability information, comprising:

6. The method of claim 1, wherein the first device establishing a second channel for a third device over a first link with the second device comprises:

the first equipment receives first information sent by second equipment, and a second channel is established for third equipment on a first link between the first equipment and the second equipment;

7. A method according to any one of claims 1 to 3, wherein the first device establishing a second channel for a third device over a first link with the second device, comprising:

8. The method of claim 1, wherein the number of second channels is one or more;

and/or, in case the number of the second channels is a plurality, each second channel is used for transmitting a management message of a corresponding or corresponding group of third devices.

9. A method according to any one of claims 1 to 3, further comprising:

the first device establishes a first channel for the second device on the first link, the first channel being used for transmitting a management and control message of the second device.

10. A method according to any one of claims 1 to 3, further comprising:

the first device transmitting a management and control message regarding the third device over the second channel and a third channel;

wherein the third channel is a channel on the second link.

11. A method according to any one of claims 1 to 3, wherein the first device establishing a second channel for a third device over a first link with the second device, comprising:

12. A method according to any one of claims 1 to 3, wherein the first device establishing a second channel for a third device over a first link with the second device, comprising:

13. The method of claim 10, wherein the first device transmitting a management message regarding the third device over the second channel comprises:

The first device sends a management and control message through the second channel, wherein the management and control message comprises the first message of the third device and/or addressing information of the third device.

14. The method of claim 10, wherein the first device transmitting a management message regarding the third device over the second channel comprises:

15. The method according to any of claims 1 to 14, wherein the uplink traffic-carrying entity of the second channel is the same as the uplink traffic-carrying entity of the first channel between the first device and the second device.

16. The control method is characterized in that the method is applied to second equipment, the second equipment is connected with first equipment through a first link, and the second equipment is connected with one or more third equipment through a second link; the method comprises the following steps:

17. The method of claim 16, wherein the method further comprises:

the second device sends capability information of the second device to the first device, wherein the capability information at least comprises interface capability information of the second device facing a third device.

18. The method of claim 17, wherein the capability information comprises at least one of:

19. The method of claim 16, wherein the method further comprises:

and after the second device determines that the third device is accessed to the second device, the second device sends first information to the first device, wherein the first information is used for notifying the first device to establish a second channel for the third device and/or notifying that a new third device is accessed to the second device.

20. The method of claim 16, wherein the number of second channels is one or more;

21. The method according to claim 16 or 20, characterized in that the method further comprises:

and the second device determines the association relation between the second channel and the third channel.

22. The method of claim 21, wherein the second device transmitting the management message between the first device and the third device over the second channel established over the first link and the third channel established over the second link comprises:

23. The method of claim 16, wherein the method further comprises:

and the second device sends second information to the first device, wherein the second information is used for representing information of a third device which the second device has access to.

24. The method of claim 16, wherein the method further comprises:

the second device establishes the third channel in the process of determining that a third device is accessed to the second device; or,

25. The method of claim 16, wherein the method further comprises:

the second device receives a first request sent by the first device, wherein the first request is used for requesting to create a GEM port/connection or an XGEM port/connection;

26. The method of claim 16, wherein the second device transmitting the management message between the first device and the third device over the second channel established over the first link and the third channel established over the second link comprises:

The second device receives a third management and control message sent by the first device through the second channel to obtain a third message and addressing information of the third device in the third management and control message, and sends the third message to the third device through the third channel according to the addressing information; and/or the number of the groups of groups,

27. The method of claim 16, wherein the uplink traffic-bearing entity of the second channel is the same as the uplink traffic-bearing entity of the first channel between the first device and the second device.

28. A control method, wherein the method is applied to third devices, and one or more of the third devices are connected with second devices through a second link; the second device is connected with the first device through a first link; the method comprises the following steps:

29. The method of claim 28, further characterized in that the management and control message is an ONU management and control interface OMCI message; the method further comprises the steps of:

the third device takes a transaction association identifier Transaction correlation identifier field in an OMCI message as the first identifier; and/or the number of the groups of groups,

the third device uses a device identification Device identifier field in the OMCI message as the first identification.

30. An access network comprising a first device, a second device, and a third device; the first device is connected with the second device through a first link, and the second device is connected with the third device through a second link;

31. A control apparatus, wherein the apparatus is applied in a first device, the apparatus comprising a first processing unit for establishing a second channel for a third device on a first link with a second device;

32. The control device is characterized in that the device is applied to second equipment, the second equipment is connected with first equipment through a first link, and the second equipment is connected with one or more third equipment through a second link; the apparatus includes a transmission unit configured to transmit a management message between the first device and the third device through a second channel established on the first link and a third channel established on the second link.

33. The control device is characterized by being applied to third equipment, and one or more of the third equipment is connected with second equipment through a second link; the second device is connected with the first device through a first link; the device comprises a sending unit, a first device and a second device, wherein the sending unit is used for transmitting a management and control message carrying a first identifier through a third channel established on the second link, and the first identifier is used for indicating whether the management and control message is sent to the second device or the first device.

34. A computer readable storage medium having stored thereon a computer program, characterized in that the program when executed by a processor realizes the steps of the method according to any of claims 1 to 15; or,

which program, when being executed by a processor, carries out the steps of the method according to any one of claims 16 to 27; or,

which when executed by a processor carries out the steps of the method of claim 28 or 29.

35. A communication device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the method of any of claims 1 to 15 when the program is executed; or,

the processor implementing the steps of the method of any one of claims 16 to 27 when executing the program; or,

the processor, when executing the program, implements the steps of the method of claim 28 or 29.